, water,
electricity), and jobs. Rapid population growth can be seen as
threatening by neighboring countries.

Ports and harbors: This entry lists the major ports and harbors
selected on the basis of overall importance to each country. This is
determined by evaluating a number of factors (e.g., dollar value of
goods handled, gross tonnage, facilities, military significance).

Radio broadcast stations: This entry includes the total number of AM,
FM, and shortwave broadcast stations.

Radios: This entry gives the total number of radio receivers.

Railways: This entry includes the total route length of the railway
network and component parts by gauge: broad, dual, narrow, standard,
and other.

Reference maps: This section includes world, regional, and special or
current interest maps.

Religions: This entry includes a rank ordering of religions by
adherents starting with the largest group and sometimes includes the
percent of total population.

Sex ratio: This entry includes the number of males for each female in
five age groups - at birth, under 15 years, 15-64 years, 65 years and
over, and for the total population. Sex ratio at birth has recently
emerged as an indicator of certain kinds of sex discrimination in some
countries. For instance, high sex ratios at birth in some Asian
countries are now attributed to sex-selective abortion and infanticide
due to a strong preference for sons. This will affect future marriage
patterns and fertility patterns. Eventually it could cause unrest
among young adult males who are unable to find partners.

Suffrage: This entry gives the age at enfranchisement and whether the
right to vote is universal or restricted.

Telephone numbers: All telephone numbers in the Factbook consist of
the country code in brackets, the city or area code (where required)
in parentheses, and the local number. The one component that is not
presented is the international access code, which varies from country
to country. For example, an international direct dial telephone call
placed from the US to Madrid, Spain, would be as follows:

011 [34] (1) 577-xxxx, where

011 is the international access code for station-to-station calls

(01 is for calls other than station-to-station calls),

[34] is the country code for Spain,

(1) is the city code for Madrid,

577 is the local exchange, and

xxxx is the local telephone number.

An international direct dial telephone call placed from another
cou